Wednesday, April 16, 2008

Railroad overpasses

My commute takes me over the railroad overpass you see above. I have noticed that there is quite a bit of heat coming from the road.

Any ideas why?

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Clancy said...

I would guess because it is not insulated by the earth. Same reason that overpass ices up with the slight est amount of snow.

Rick Logue said...

I never thought of that. Makes sense to me.